Locomotive exhaust piping and feed water heater



Dec. 6, 1932.

F. KIESEL, JR

LOCOMQTIVE' EXHAUST PIPING AND FEED WATER HEATER 1927 2 Sheets-Sheet 1Filed Dec.

Dec. 6, 1932. w. F. KHESEL, JR 1,389,924

LOCOMOTIVE EXHAUST PIPING AND FEED WATER HEATER Filed Dec. 30. 1927 2Sheets-Sheet 2 %12?7M% 1M 51%- QYM "W- atlioz M11 Patented Dec. 6, 1932UNITED STATES,

WILLIAM F. KIESEL, .13., or ALTOONA, rnnnsvrvanm LoooMo'rIvn EXHAUSTPIPING AND FEED WATER. HEATER Application filed December 30, 1927iserial No. 243,725.

This invention relates to locomotives and more particularly to feedWater heater ar-- rangements and appurtenances for use conjunctionwith'locom'otives.

It is a general object of the present invention to provide a novelarrangement of feed water heater and appurtenancesfor use on locomotiveboilers.

More particularly the various objects and features of novelty of thepresent invention may be enumerated as follows: I

1. The arrangement of a feed water heater supported by the smoke-box andarranged behind the stack. j

2. The provision of an opening in the smoke-box through which a portionof the feed water heater projects, the opening being closed by theheater. i

3. The provision of exhaust steam conduits from the steam chests of'thecylinders to the feed water heater entirely within the smokebox, wherebyheat is conserved and the C011 struction of the locomotive simplified.-V

4. The arrangement of the hot water pipe,

from the feed water heater to the feed pump partially within thesmoke-box.

' 5. The arrangement of the feed water heater in as close proximity tothe valve chests as possible in order that the exhaust steam passageswill be as short aspossible and the.

friction losses of the exhaust steam reduced to a minimum.

6. The connection of cold pipes to the outside portionof the feed waterheater and hot pipes to the inside portion.

Other and further objects and features of the-invention will be apparentto those skilled in the art upon a consideration of the accompanyingdrawings and following specification whereinis disclosed a singleexemplary embodiment of the invention, with the understanding howeverthat such changes may be made therein as fall within the scope of theappended claim.

In said drawings:

the front end of a locomotive with certain parts of the boiler barrelbroken away to more clearly illustrate the arrangement of feed waterpumps and piping; and

steaminto the-petticoat 22 depending from Fig. 1 is a l'ongitudrnalvertical section of Fig. 2 is a composite view showing on the right handside a front'elevation of alocomotive and'on the left hand side atransverse section-taken on broken line 22 of Fig. 1. Feed waterheaters'of both the open and the closed type have been used inconjunction with locomotive boilersfor the purpose of increasing theeconomy and therefore it is not considered necessary to give a completedescription of either the construction or the operation of such devices.The one disclosed in'the present application is of the'so-call'edj opentype, i. e., the exhaust steam and the water. are; intimatelyintermingled, whereby the steam is condensed and'the condensate added tothe feed waterywhereby all of the heat in the part of the exhaust steamwhich is condensed is made use of. a 1 i Referring'to thedrawings,1there is disclosed-at 10 the barrel of a locomotive boilerprovided at the front end with the flue sheet 11. The flues' have beenomitted for the. sake of clearness of illustration. Fitted to thefrontend of the boiler barrel is the smoke box 12', having the tubularportion 18 making an air-tight fit with the front end of the barrel 10,where it projects beyond the flue sheet; About midway of the length ofthe smoke-box and at'the top is the'stack 14, here shown asformedintegral with the smoke-box casting. The smoke-100x issupp'ortedron the'cylinder saddle 15- which carries at either side'thepower cylinders16, each surmounted by a valve'charnber 17 and a steamchest 18, all as well known in the art.

Steam is supplied to the cylinders 16 in any desired manner andcontrolled by the valves 17. Exhaust steam from each cylinder 16 passesthrough the valve chamber 1 7 and is exhausted therefrom into thelateral passage 19. A portion of this steam passes through the conduit20 to the centrallyarrangedexhaust nozzle 21, which directs the theinternal stack'portion' 28 which is secured to the outer stack portion14. It willobe un-, derstood that the hot flue gases are discharged intothe smoke-box from the fines and are] then discharged through the stackby the ejector action of the steam issuingfrom the exhaust nozzle 21 inpuffs alternating for opposite cylinders. Thereby the whole interior ofthe smoke-box is always filled with hot gases and smoke and thetemperature within the smoke-box is always high when the locomotive isunder steam.

A portion of the steam exhausted from each passage 19 1s conducted by aneasy curved passage 24 to a p1pe or conduit 25 whlch 1s joined to theend ofv the passage 24' by suit able fastening means arranged betweenthe flanges 26 and 27. This junction of the passage 24 and the pipe 25is within the smokebox. Here it should be noted that the total quantityof steam issuing from each valve 17 is divided between the passages and24,

each arranged with smooth curves and properly tapering sections toeliminate to a large extent friction, and to prevent a. reduction.

in the velocity head of the steam whereby maximum efficiency of theexhaust nozzle is obtained and also the maximum quantity of heat 1sretained 1n the steam which passes into the pipe 25. It will beunderstood here that the cylinder and steam chest arrangement isidentical on each side of the locomotive and that there are thus twoconduits passing into the feedwater heater. r

Just behind the stack 14 and in the upper wall of the smoke-box is alaterally elongatedopening 28. This is intended to accommodate a portionof the feed .water heater 29, the main part 30 of which is outside ofthe smoke-box and just behind the stack. It is of substantially the samediameter as the stack and is largely prevented from being cooled by airwhen the locomotive is moving forward by the shielding action ofthestack. This will be clear from Fig. 2. A flange 31 on the feed waterheater is adapted to be bolted down to a suitable seat 32 surroundingthe opening 28, whereby the feed water heater eflectively seals theopening in the smoke-box. Thepcrtion 33 of the feed water heater whichpasses through the opening has the. goose neck 34 at the bottom and hasthe steam inlets 35 arranged laterally and diagonally of the goose neckportionwith flanges 37 thereon. These flanges are adapted to be attachedinto the boiler by means of a composite pump I assembly arranged outsideof the boiler bar rel and rearward of the smoke-box and carried by themain frame of the locomotive. This assembly comprises a steam engine 40connected in any suitable manner to a cold water pump 41 and a hot waterpump 42 so that the pumps are driven in unison. The cold water suctionline 43 leads back to the tender tank, and the cold water from the pumppasses through the outside pipe 44 and is introduced into the feed waterheater through the side opening 45 outside of the. smoke-box. Theexhaust from the pump engine passes through the outside pipe 46 and isconducted into the iced water heater at47 outside of the smoke- Theheated water infthe feed Water heater passes down the goose neck 34 andfrom there into the inside hot water pipe 50 which is connected to thegooseneck by means of suitable flanges as shown at 51. This pipe'50 hasits lower end 52 attached to the flange of an elbow 53 formedintegralwith the portion of the smoke-box at the rear face thereof near thebottom, which projects beyond the circumference of the boiler barrelring 13. Thus the outlet of this elbow is outside of the boiler barrel.Fromthe outlet 54 of the elbow 53 a short outside pipe 55 leads to theintake 56 of the hot water pump 42. This pipe is quite short and is wellinsulated and forms the? only portion er the hot water conduit which isnot within the heated smoke-box. The hot water is conducted from the hotwater pump 42 by means of a suitably insulated pipe 57 to the boilercheck valve (not shown). a The hot and cold water pumps working inunison maintain a substantialconstant quantity of water inthe feed waterheater. How-' ever, means, which form no part of the present invention,are provided in the heaterto take care of the excess Water resultingfrom the condensed steam.

The invention provides an extremely ef fective feed water heatingsystem. It must be realized thatthe quantity of the steam which can besupplied to the feed water heat er is materially limited, since a large.proportion of the exhaust steam is required to provide a suitable draftfor the fire. The arrangement of parts as'just described'rmakes a mosteffective use of the quantity of steam allotted to the feed water heatersince the extremely short exhauststeam conduits and the easy curvedexhaust steam passages is such as to conserve the heat and the velocityhead of the steam to a maximum extent. The particular location of thefeed water heater results in a minimum length of steam passage andfurther also reduces the distance which the hot water must travelfromtheflfeed water heater to the pumps, the greater'part of the layoutand one which is considerably neater in appearance and simpler andcheaper to I construct than those heretofore in vogue.

Having thus described the invention what is claimed as new and desiredto be secured by smoke-box, exhaust steam outlets from said valves, afeed water heater mounted on top of said smoke-box and having a portionprojecting above thesmoke-box Wall and a portion extending through thewall of the smoke-box toward said outlets, all of said feed water heaterbeing behind the stack, conduits connecting said outlets directly tosaid heater and entirely in said smoke-box, a hot water outlet pipeextending from said heater to the bottom of said smoke-box, acontinuation of said pipe extending through the rear wall of saidsmoke-box and alongside the outside of the boiler, and a cold water feedpipe connccted to the portion of the heater whichis above the smoke-boxWall.

In testimony whereof I hereunto aifix my signature,

WVILLIAM F. KIESEL, JR.

